Written by Craig Bartlett   Cast Spencer Klein ... Arnold (voice) Dan Butler ... Mr. Simmons / Clown (voice) Dan Castellaneta ... Arnold's Grandpa / Earl / First Midget (voice) Baoan Coleman ... Mr. Hyunh (voice) Andy Dick ... Monkeyman (voice) Sam Gifaldi ... Sid (voice) Dom Irrera ... Ernie Potts (voice) James Keane ... Marty Green (voice) Anndi McAfee ... Phoebe Heyerdahl / Second Midget (voice) Justin Shenkarow ... Harold Berman (voice) Francesca Marie Smith ... Helga Pataki / Sheena (voice) (as Francesca Smith) Jamil Walker Smith ... Gerald Johanssen / Subway Cop (voice) Kath Soucie ... Miriam Pataki / Clown (voice) (as Kath E. Soucie) Steve Viksten ... Giant Clown / Caesar (voice) Christopher Walberg ... Stinky Petersen (voice) Jordan Warkol ... Chocolate Boy (voice) Produced by Craig Bartlett   Mary Harrington   Michelle Lamoreaux   Donna Smith   Steve Socki   Original Music by Jim Lang

Additional Info Premiere: March 04, 2000 DVD Release: December 04, 2009 Country: Distributor: Shout! Factory Websites: Production Companies Nicktoons Productions Nubian Nights Worldwide Games Animation (seasons 1-3) Nickelodeon Animation Studios (seasons 4-5) Nickelodeon Network Nicktoons Productions (1996-2004) Snee-Oosh Productions Distributors Nickelodeon Network   (1996-2004) (USA) (TV) CBS All Access   (2020) (USA) (video) (VOD) CBS   (2001) (USA) (TV) Nickelodeon   (USA) (TV) Paramount Home Entertainment   (1997) (USA) (VHS) Paramount Home Entertainment   (2001) (USA) (DVD) Shout! Factory   (2011) (USA) (DVD) (season one) Shout! Factory   (2012) (USA) (DVD) (Season Two, Parts One and Two) Rating Stats Overall Rating -- / 10 Our Rating -- / 10 Your Friends -- / 10 Male Users -- / 10 Female Users -- / 10 Site Ranking #2,892 / 21,524 Site Ranking